Buggy code:
public class JavaProject extends Openable implements IProjectNature , IJavaProject { protected static final String [ ] NO_PREREQUISITES = new String [ 0 ] ; protected IProject fProject ; public JavaProject ( ) { } public JavaProject ( IProject project , IJavaElement parent ) { } protected void addToBuildSpec ( String builderID ) throws CoreException { } public static IPath canonicalizedPath ( IPath externalPath ) { } protected void closing ( Object info ) throws JavaModelException { } public IPackageFragmentRoot [ ] computePackageFragmentRoots ( boolean retrieveExportedRoots ) { } public void computePackageFragmentRoots ( ObjectVector accumulatedRoots , HashSet rootIDs , boolean insideOriginalProject , boolean checkExistency , boolean retrieveExportedRoots ) { } public void computePackageFragmentRoots ( IClasspathEntry entry , ObjectVector accumulatedRoots , HashSet rootIDs , boolean insideOriginalProject , boolean checkExistency , boolean retrieveExportedRoots ) { } public String computeSharedPropertyFileName ( QualifiedName qName ) { } public void configure ( ) throws CoreException { } protected OpenableElementInfo createElementInfo ( ) { } public void deconfigure ( ) throws CoreException { } protected IClasspathEntry [ ] defaultClasspath ( ) throws JavaModelException { } protected IPath defaultOutputLocation ( ) throws JavaModelException { } public boolean equals ( Object o ) { } public IJavaElement findElement ( IPath path ) throws JavaModelException { } public IPackageFragment findPackageFragment ( IPath path ) throws JavaModelException { } public IPackageFragmentRoot findPackageFragmentRoot ( IPath path ) throws JavaModelException { } <START_BUG> protected boolean generateInfos ( OpenableElementInfo info , IProgressMonitor pm , Hashtable newElements , IResource underlyingResource ) throws JavaModelException { <END_BUG> boolean validInfo = false ; try { if ( ( ( IProject ) ( getUnderlyingResource ( ) ) ) . isOpen ( ) ) { fgJavaModelManager . putInfo ( this , info ) ; boolean needToSaveClasspath = false ; IPath outputLocation = null ; IClasspathEntry [ ] classpath = null ; String sharedClasspath = loadClasspath ( ) ; if ( sharedClasspath != null ) { try { classpath = readPaths ( sharedClasspath ) ; } catch ( IOException e ) { } catch ( RuntimeException e ) { } if ( ( classpath != null ) && ( ( classpath . length ) > 0 ) ) { IClasspathEntry entry = classpath [ ( ( classpath . length ) - 1 ) ] ; if ( ( entry . getContentKind ( ) ) == ( ClasspathEntry . K_OUTPUT ) ) { outputLocation = entry . getPath ( ) ; IClasspathEntry [ ] copy = new IClasspathEntry [ ( classpath . length ) - 1 ] ; System . arraycopy ( classpath , 0 , copy , 0 , copy . length ) ; classpath = copy ; } } } if ( outputLocation == null ) { outputLocation = defaultOutputLocation ( ) ; needToSaveClasspath = true ; } ( ( JavaProjectElementInfo ) ( info ) ) . setOutputLocation ( outputLocation ) ; if ( classpath == null ) { classpath = defaultClasspath ( ) ; needToSaveClasspath = true ; } setRawClasspath0 ( classpath ) ; validInfo = true ; } } catch ( JavaModelException e ) { } finally { if ( ! validInfo ) fgJavaModelManager . removeInfo ( this ) ; } return validInfo ; } public IPackageFragmentRoot [ ] getAllPackageFragmentRoots ( ) throws JavaModelException { } public IPackageFragmentRoot [ ] getBuilderRoots ( IResourceDelta delta ) throws JavaModelException { } protected String getClasspathAsXMLString ( IClasspathEntry [ ] classpath , IPath outputLocation ) throws JavaModelException { } public IClasspathEntry getClasspathEntryFor ( IPath path ) throws JavaModelException { } public QualifiedName getClasspathPropertyName ( ) { } protected static Element getEntryAsXMLElement ( Document document , IClasspathEntry entry , IPath prefixPath ) throws JavaModelException { } protected char getHandleMementoDelimiter ( ) { } private ICommand getJavaCommand ( IProjectDescription description ) throws CoreException { } public IJavaProject getJavaProject ( ) { } protected JavaProjectElementInfo getJavaProjectElementInfo ( ) throws JavaModelException { } public NameLookup getNameLookup ( ) throws JavaModelException { } public Object [ ] getNonJavaResources ( ) throws JavaModelException { } public IPath getOutputLocation ( ) throws JavaModelException { } public IPackageFragmentRoot getPackageFragmentRoot ( String jarPath ) { } public IPackageFragmentRoot getPackageFragmentRoot ( IResource resource ) { } public IPackageFragmentRoot getPackageFragmentRoot ( IPath path ) { } public IPackageFragmentRoot [ ] getPackageFragmentRoots ( ) throws JavaModelException { } protected IPackageFragmentRoot [ ] getPackageFragmentRoots ( IPath path ) throws JavaModelException { } public IPackageFragmentRoot [ ] getPackageFragmentRoots ( IClasspathEntry entry ) { } public IPackageFragment [ ] getPackageFragments ( ) throws JavaModelException { } public IPackageFragment [ ] getPackageFragmentsInRoots ( IPackageFragmentRoot [ ] roots ) { } public IProject getProject ( ) { } public IClasspathEntry [ ] getRawClasspath ( ) throws JavaModelException { } public String [ ] getRequiredProjectNames ( ) throws JavaModelException { } public IClasspathEntry [ ] getResolvedClasspath ( boolean ignoreUnresolvedVariable ) throws JavaModelException { } public IClasspathEntry [ ] getResolvedClasspath ( boolean ignoreUnresolvedVariable , boolean generateMarkerOnError ) throws JavaModelException { } public IClasspathEntry [ ] getExpandedClasspath ( boolean ignoreUnresolvedVariable ) throws JavaModelException { } public IClasspathEntry [ ] getExpandedClasspath ( boolean ignoreUnresolvedVariable , boolean generateMarkerOnError ) throws JavaModelException { } private void computeExpandedClasspath ( JavaProject initialProject , boolean ignoreUnresolvedVariable , boolean generateMarkerOnError , HashSet visitedProjects , ObjectVector accumulatedEntries ) throws JavaModelException { } public ISearchableNameEnvironment getSearchableNameEnvironment ( ) throws JavaModelException { } public String getSharedProperty ( QualifiedName key ) throws CoreException { } public SourceMapper getSourceMapper ( ) { } public IResource getUnderlyingResource ( ) throws JavaModelException { } public boolean hasBuildState ( ) { } public boolean hasClasspathCycle ( IClasspathEntry [ ] entries ) { } public int hashCode ( ) { } public boolean hasSource ( ) { } public boolean isClasspathEqualsTo ( IClasspathEntry [ ] otherClasspathWithOutput ) throws JavaModelException { } static int kindFromString ( String kindStr ) { } static String kindToString ( int kind ) { } public String loadClasspath ( ) throws JavaModelException { } public IEvaluationContext newEvaluationContext ( ) { } public ITypeHierarchy newTypeHierarchy ( IRegion region , IProgressMonitor monitor ) throws JavaModelException { }

Fix:
protected boolean generateInfos ( OpenableElementInfo info , IProgressMonitor pm , Map newElements , IResource underlyingResource ) throws JavaModelException {